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Introduction, characteristics, and applications of Texas Instruments DRV8242-Q1 automotive h-bridge driver

2/27/2024 9:20:00 AM

Summary: AEC-Q100 fully integrated h-bridge driver for a wide range of automotive applications.

Texas Instruments DRV8242-Q1 automotive h-bridge driver

The Texas Instruments DRV8242-Q1 Automotive H-Bridge Driver is an AEC-Q100 compliant fully integrated H-bridge driver suitable for a variety of automotive applications. The device provides voltage monitoring, load diagnostics and protection against overcurrent and overtemperature. The DRV8242-Q1 driver is a bidirectional full-bridge driver with PWM or phase enable control and designed on the BiCMOS high-power process technology node. This automotive driver is ideal for automotive brushed DC motors, solenoids, door and seat modules, body control modules (BCM), gas engine systems and on-board chargers.

The DRV8242-Q1 driver provides three hard-wired interfaces HW (H) and two SPI interfaces SPI (P) and SPI (S). The driver integrates an n-channel H-bridge, charge pump regulator, regulated high-side current sensing, current proportional output and protection circuitry.


characteristic

  • AEC-Q100 Qualified for Automotive Applications:

    • -40℃~125℃, T(A) temperature grade 1

  • Documentation available to aid in the design of functional safety systems

  • 4.5V to 35V (absolute maximum 40V) operating voltage range

  • For QFN package, RON_LS + RON_HS = 250 milliohm resistor

  • I(OUT) maximum = 6A (QFN)

  • PWM frequency operation up to 25KHz with automatic dead time assertion

  • Configurable slew rate and spread spectrum clocking for low electromagnetic interference (EMI)

  • Integrated current sensing (eliminates shunt resistor)

  • Proportional load current output on IPROPI pin

  • Configurable current regulation

  • Protection and diagnostic functions with configurable fault reaction (lockout or retry)

    • Load diagnostics in off and on states, detecting open loads and short circuits

    • Supply voltage monitoring (VM)

    • Overcurrent protection

    • Over temperature protection

    • Fault indication on nFAULT pin

  • Supports 3.3V and 5V logic input

  • Typical low sleep current of 1.3µA at 25°C

  • Available in 3 variants - HW (H), SPI (S) or SPI (P)

  • Single full bridge using PWM or PH/EN mode


app

  • Automotive brushed DC motors and solenoids

  • Door modules and seat modules

  • Body Control Module (BCM)

  • gas engine system

  • car charger

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